Stopped Orders

Imported from previous forum

[ original email was from Ryan Pierce - rpierce@taltrade.com ]
FIX has a "Stopped" OrdStatus to show that an order was stopped at an exchange. It seems ambiguous how such an Execution message should be implemented. The point of stopping an order is to guarantee an execution price or better. So which field should be used for that price? And how would one represent an order stopped at the open?

Ryan Pierce
Townsend Analytics Ltd.